From: | Simon Riggs <simon(dot)riggs(at)enterprisedb(dot)com> |
---|---|
To: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
Cc: | Greg Stark <stark(at)mit(dot)edu>, Peter Geoghegan <pg(at)bowt(dot)ie>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Allow single table VACUUM in transaction block |
Date: | 2022-11-21 15:07:25 |
Message-ID: | CANbhV-G4U08ne=9jY-Lp-4Ph1SQee9he3i7caC=OFUwvMeoROw@mail.gmail.com |
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Lists: | pgsql-hackers |
On Fri, 18 Nov 2022 at 11:54, Simon Riggs <simon(dot)riggs(at)enterprisedb(dot)com> wrote:
>
> On Thu, 17 Nov 2022 at 20:00, Justin Pryzby <pryzby(at)telsasoft(dot)com> wrote:
> >
> > On Wed, Nov 16, 2022 at 05:14:07PM -0500, Greg Stark wrote:
> > > I think this requesting autovacuum worker should be a distinct
> > > command. Or at least an explicit option to vacuum.
> >
> > +1. I was going to suggest VACUUM (NOWAIT) ..
>
> Yes, I have no problem with an explicit command.
>
> At the moment the patch runs VACUUM in the background in an autovacuum
> process, but the call is asynchronous, since we do not wait for the
> command to finish (or even start).
>
> So the command names I was thinking of would be one of these:
>
> VACUUM (BACKGROUND) or VACUUM (AUTOVACUUM) - which might be clearer
> or
> VACUUM (ASYNC) - which is more descriptive of the behavior
>
> or we could go for both
> VACUUM (BACKGROUND, ASYNC) - since this allows us to have a
> BACKGROUND, SYNC version in the future
Attached patch implements VACUUM (BACKGROUND).
There are quite a few small details to consider; please read the docs
and comments.
There is a noticeable delay before the background vacuum starts.
--
Simon Riggs http://www.EnterpriseDB.com/
Attachment | Content-Type | Size |
---|---|---|
background_vacuum.v3.patch | application/octet-stream | 13.7 KB |
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